A chain-driven lifting device and shuttle vehicle

Abstract

The present invention discloses a chain-driven lifting device, comprising two brackets, a lifting frame located between the two brackets, a driving shaft, a driven shaft, and a chain; wherein an S-shaped chain drive is formed by the cooperation of the chain with the driving and driven gears, and under the constraint of the chain, the driving and driven gears move along the chain when rotating to produce an effect of rising or falling, thereby driving the lifting frame to rise or fall. The meshing cooperation between the gears and the chain has the advantage of stable movement, and the double chain cooperation of the first and second chains can offset the component forces in the horizontal direction and form a combined force in the vertical direction, further improving the stability of the movement. The present invention also discloses a shuttle vehicle having the chain-driven lifting device.

Description

Technical Field

[0001] The chain lifting device of the present invention belongs to the technical field of chain transmission.

[0002] The shuttle vehicle of the present invention belongs to the technical field of storage systems, in particular to a shuttle vehicle running on a storage track. Background Art

[0003] In existing warehousing systems, shuttles are often used to move on shelf tracks and to pick up and place goods. Among them, some shuttles need to be equipped with a lifting frame to lift the goods upward to a specified position. At the same time, in some fixed transfer cargo positions, a lifting device fixed at a certain position is also required to lift or move the goods downward to a specified position. In current lifting devices, a cam mechanism is often used as a lifting power structure. Through the characteristics of the cam, the lifting frame moves up or down under the rotation of the cam. However, a common problem in the use of a lifting device using a cam device is that the angular accuracy between the cam and the shaft of each part is strictly required. In the case where the cam and the shaft are usually assembled with a shaft key, if the assembly accuracy between the cam and the shaft key is poor or wear occurs, the stability of the lifting device is reduced, and even the defects of jerking and vibration occur.

[0004] Therefore, a new technical solution is needed to solve the above problems. Summary of the invention

[0005] Purpose of the invention: The present invention provides a chain-driven lifting device to solve the problem of unstable up and down movement of a lifting frame.

[0006] The present invention also provides a shuttle vehicle, on which the chain transmission lifting device is applied.

[0007] Technical solution: To achieve the above purpose, the present invention can adopt the following technical solution:

[0008] A chain-driven lifting device comprises two brackets, a lifting frame located between the two brackets, a driving shaft, a driven shaft arranged in parallel with the driving shaft, and a driving device for driving the driving shaft to rotate; the driving device, the driving shaft, and the driven shaft are all installed in the lifting frame; a first driving gear and a second driving gear are provided at both ends of the driving shaft, and a first driven gear and a second driven gear are provided at both ends of the driven shaft; a first chain is wound around the first driving gear and the first driven gear, and a second chain is wound around the second driving gear and the second driven gear; one end of the first chain is fixed above the bracket, and after meshing with the first driving gear, it extends from below the first driving gear to above the first driven gear, and after meshing with the first driven gear, the other end of the first chain is fixed below the bracket; one end of the second chain is fixed below the bracket, and after meshing with the second driving gear, it extends from above the second driving gear to below the second driven gear, and after meshing with the second driven gear, the other end of the second chain is fixed above the bracket.

[0009] Beneficial effect: Compared with the prior art, the present technical solution forms an S-shaped chain transmission through the cooperation of the chain with the active and driven gears, and under the constraint of the chain, the active and driven gears move along the chain when rotating to produce an effect of rising or falling, thereby driving the lifting frame to rise or fall. The meshing cooperation between the gear and the chain has the advantage of stable movement, and the double chain cooperation of the first and second chains can offset the component forces in the horizontal direction and form a combined force in the vertical direction, further improving the stability of the movement.

[0010] Furthermore, the driving device has a power output shaft, an output gear is provided on the power output shaft, an input gear matched with the output gear is provided on the driving shaft, and the output gear and the input gear are driven by a third chain.

[0011] Furthermore, the driving device is a motor system, which includes a driving motor and a reducer, and the power output shaft is an output shaft of the reducer.

[0012] Furthermore, the bracket is a box with a hollow interior, and a vertical guide column is provided on the inner side of the bracket, and a guide slider that cooperates with the guide column is provided on the side of the lifting frame; the inner side of the bracket has an opening, and the end of the driving shaft and the end of the driven shaft extend into the opening, the first driving gear, the second driving gear, the first driven gear, and the second driven gear are all located inside the box, one end of the first chain is fixed to the inner side of the top wall of the box, and the other end of the first chain is fixed to the bottom wall of the box, one end of the second chain is fixed to the bottom wall of the box, and the other end of the second chain is fixed to the inner side of the top wall of the box.

[0013] Furthermore, a first driving gear and a second driving gear at one end of the driving shaft are symmetrically arranged with a first driving gear and a second driving gear at the other end; a first driven gear and a second driven gear at one end of the driven shaft are symmetrically arranged with a first driven gear and a second driven gear at the other end.

[0014] The shuttle provided by the present invention adopts the following technical solutions:

[0015] A shuttle vehicle with the chain-driven lifting device comprises a vehicle body and wheels located outside the vehicle body; the feature is that two brackets are mounted on the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the chain transmission lifting device of the present invention.

[0017] Figure 2 yes Figure 1 A three-dimensional diagram of the cooperation between the driving shaft, driven shaft, drive device and chain.

[0018] Figure 3 It is a side view of the chain-driven lifting device, and shows the state of the lifting frame after it is raised.

[0019] Figure 4 It is a side view of the chain-driven lifting device, and shows the state of the lifting frame after it is lowered.

[0020] Figure 5 yes Figure 4 Cross-sectional view along AA direction. DETAILED DESCRIPTION

[0021] Please combine Figures 1 to 5As shown, this embodiment discloses a chain-driven lifting device, comprising two brackets 100, a lifting frame 200 located between the two brackets 100, a driving shaft 300, a driven shaft 400 arranged in parallel with the driving shaft 300, and a driving device 500 for driving the driving shaft 300 to rotate. The driving device 500, the driving shaft 300, and the driven shaft 400 are all installed in the lifting frame 200, that is, the lifting frame 200 is driven to move together. The driving shaft 300 and the driven shaft 400 are installed on the side of the lifting frame through a sleeve 210. A first driving gear 301 and a second driving gear 302 are provided at both ends of the driving shaft 300. A first driven gear 401 and a second driven gear 402 are provided at both ends of the driven shaft 400. A first chain 610 is wound around the first driving gear 301 and the first driven gear 401. A second chain 620 is wound around the second driving gear 302 and the second driven gear 402. One end of the first chain 610 is fixed to the upper part of the bracket 100 by a bolt 611, and after being meshed with the first driving gear 301, it extends from the lower part of the first driving gear 301 to the upper part of the first driven gear 401, and after being meshed with the lower part of the first driven gear 401, the other end of the first chain 610 is fixed to the lower part of the bracket 100 by a bolt 612. The first chain 610 forms a horizontal "S" shape through the cooperation with the first driving gear 301 and the first driven gear 401. One end of the second chain 620 is fixed to the lower part of the bracket by a bolt 621, and after being meshed with the second driving gear 302, it extends from the upper part of the second driving gear 302 to the lower part of the second driven gear 402, and after being meshed with the second driven gear 402, the other end of the second chain 620 is fixed to the upper part of the bracket 100 by a bolt 622. The second chain 620 forms a transverse "S" shape opposite to the first chain 610 by cooperating with the first driving gear 302 and the first driven gear 402. In this embodiment, a first driving gear and a second driving gear at one end of the driving shaft 300 are symmetrically arranged with a first driving gear and a second driving gear at the other end; a first driven gear and a second driven gear at one end of the driven shaft 400 are symmetrically arranged with a first driven gear and a second driven gear at the other end.

[0022] The driving device 500 is a motor system, which includes a driving motor 501 and a reducer 502. The output shaft of the reducer 502 serves as a power output shaft 503. An output gear 504 is provided on the power output shaft 503. An input gear 303 is provided on the driving shaft 300 to cooperate with the output gear 504, and the output gear 504 and the input gear 303 are driven by a third chain 505. The bracket 100 is a hollow box. A vertical guide column 101 is provided on the inner side of the bracket 100, and a guide slider 201 is provided on the side of the lifting frame 200 to cooperate with the guide column 101. The bracket 100 has an opening 102 on the inner side, and the end of the driving shaft 300 and the end of the driven shaft 400 extend into the opening 102. The first driving gear 301, the second driving gear 302, the first driven gear 401, and the second driven gear 402 are all located inside the box. One end of the first chain 610 is fixed to the inner side of the top wall of the box, and the other end of the first chain 610 is fixed to the bottom wall of the box. One end of the second chain 620 is fixed to the bottom wall of the box, and the other end of the second chain 620 is fixed to the inner side of the top wall of the box.

[0023] Please combine Figure 3 and Figure 4 As shown. The lifting device in this embodiment is driven by a chain. The first chain 610 and the second chain 620 are fixed in the bracket 100, and when the first driving gear 301 and the second driving gear 302 rotate with the driving shaft 300, if Figure 3 When the angle shown is rotated counterclockwise, that is, when the first and second chains rotate upward, the second driving gear 302 will curl the second chain 620 so that the second chain 620 drives the second driven gear 402 to rotate at the same time, and the driven shaft 400 will also rotate, and drive the first driven gear 401 to curl the first chain 610. Since the lengths of the first chain 610 and the second chain 620 are fixed and cannot be moved, the rotation of each main and driven wheel can only climb along the first chain 610 and the second chain 620, so that the lifting frame 200 climbs at the same time. In addition, the double chain cooperation of the first and second chains can offset each other's component forces in the horizontal direction, and form a combined force in the vertical direction, thereby improving the stability of the movement of the lifting frame 200. On the contrary, when the first driving gear 301 and the second driving gear 302 rotate with the driving shaft 300, if Figure 3 If the angle shown is rotated clockwise, the rotation of the driving wheel and the driven wheel will descend along the first chain 610 and the second chain 620, and the lifting frame 200 will descend at the same time. Figure 4The figure shows the state of the lifting frame 200 after it is lowered. Therefore, it is only necessary to control the positive and negative rotation of the driving shaft 300 to control the rise and fall of the lifting frame 200. The meshing cooperation between the gears and the chain has the advantage of stable movement. The lifting of the lifting frame 200 can be kept stable and will not cause hidden dangers such as skewness during lifting. The first and second driving gears, the first and second driven gears, and the first and second chains are all located in the bracket of the box body, and will not interfere with the movement of the lifting frame 200. At the same time, it is relatively simple and convenient to replace the chain and gears, making the structure convenient for later maintenance.

[0024] And further, this chain drive lifting device can be installed on the shuttle car or used as a fixed lifting device.When being installed on the shuttle car, this chain drive lifting device is fixed on the car body.

[0025] There are many methods and approaches to implement the technical solution of the present invention, and the above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A shuttle vehicle with a chain-driven lifting device, comprising a vehicle body and wheels located outside the vehicle body; characterized in that: The chain-driven lifting device comprises two brackets, a lifting frame located between the two brackets, a driving shaft, a driven shaft arranged parallel to the driving shaft, and a driving device for driving the driving shaft to rotate; the characteristic is that the driving device, the driving shaft, and the driven shaft are all installed in the lifting frame; a first driving gear and a second driving gear are provided at both ends of the driving shaft, and a first driven gear and a second driven gear are provided at both ends of the driven shaft; a first chain is wound around the first driving gear and the first driven gear, and a second chain is wound around the second driving gear and the second driven gear; one end of the first chain is fixed above the bracket, and after meshing with the first driving gear, it extends from below the first driving gear to above the first driven gear, and after meshing with the first driven gear, the other end of the first chain is fixed below the bracket; one end of the second chain is fixed below the bracket, and after meshing with the second driving gear, it extends from above the second driving gear to below the second driven gear, and after meshing with the second driven gear, the other end of the second chain is fixed above the bracket; A first driving gear and a second driving gear at one end of the driving shaft are symmetrically arranged with a first driving gear and a second driving gear at the other end; a first driven gear and a second driven gear at one end of the driven shaft are symmetrically arranged with a first driven gear and a second driven gear at the other end; The bracket is a box body with a hollow interior, and a vertical guide column is provided on the inner side of the bracket, and a guide slider matched with the guide column is provided on the side of the lifting frame; the inner side of the bracket has an opening, and the end of the driving shaft and the end of the driven shaft extend into the opening, the first driving gear, the second driving gear, the first driven gear, and the second driven gear are all located inside the box body, one end of the first chain is fixed to the inner side of the top wall of the box body, and the other end of the first chain is fixed to the bottom wall of the box body, one end of the second chain is fixed to the bottom wall of the box body, and the other end of the second chain is fixed to the inner side of the top wall of the box body; two brackets are installed on the vehicle body.

2. The shuttle vehicle with chain drive lifting device according to claim 1, characterized in that: The driving device has a power output shaft, an output gear is arranged on the power output shaft, an input gear matched with the output gear is arranged on the driving shaft, and the output gear and the input gear are driven by a third chain.

3. The shuttle vehicle with chain drive lifting device according to claim 2, characterized in that: The driving device is a motor system, which includes a driving motor and a reducer, and the power output shaft is the output shaft of the reducer.

Images